How to Troubleshoot Connecting a DVD Player With a Comcast Cable Boxby Maya Austen
Unlike the procedure for connecting a VCR to a Comcast cable box and TV, when a DVD player and cable box are hooked up to the same television set, both devices connect directly to the TV set. If you have a Comcast cable box and DVD player connected to a TV but you cannot get the TV to display video from the DVD player or cable box, one of three things is most likely wrong. Either your DVD player cable connections are incorrect, your cable box cable connections are incorrect or your TV is set to the wrong video input channel.
Make certain that the cable connections hooking up the DVD player are correct. If properly hooked up, a set of AV cables is used to connect the DVD player's AV output jacks to the corresponding AV input jacks on the TV set. The DVD player does not connect to the Comcast cable box. It connects directly to the TV. Each AV plug must be inserted into the AV jack that corresponds to its color. For example, the red AV plug inserts into the red AV jack. Make certain each cable is plugged securely into its proper jack.
Verify that Comcast cable box is installed correctly. If properly hooked up, the coaxial cable that is connected to the cable wall outlet installed by the Comcast technician is plugged into the RF "Cable In" terminal on the back of the cable box. Depending upon the type of TV you have, standard or high definition, either another coaxial cable or an HDMI cable is used to connect the output from the cable box to the corresponding input on the TV set. Make certain each cable is plugged securely into its jack.
Confirm that the TV's video input channel is set to the proper source. To watch video playing from the DVD player, the video input channel must be set to the AV source. To watch video playing from the cable box on an HD TV set, the video input channel must be set to the HDMI source. To watch video playing from the cable box on an SD TV set, the TV must be tuned to channel 3. Use the "Input" or "Source" button on the TV remote control to switch the TV's video input channel.
- photo_camera Thinkstock/Comstock/Getty Images